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Chapter 2 Using Spectrum Analyzer
Setting amplitude
Table 4
Table 4
Parameter
Reference Level
Attenuation
Attenuation Auto/
Couple/Manual
Scale Division
Scale Unit
Preamp On/Off
External Offset
Mode On/Off
External Offset
Auto Scale
Page 12
describes each function.
Amplitude functions
Definition
Sets the horizontal bar that can be placed at any graticule.
Enter a value using the on-screen keyboard.
Access: Menu > Amp/Scale > Reference Level
Tap to set the attenuation value using the on-screen key-
board.
Access: Menu > Amp/Scale > Attenuation
Tap to select the attenuation option from Auto, Manual, or
Couple.
– Auto: sets the input attenuator's level automatically; you
must select a lower attenuation.
– Manual: sets the input attenuation manually up to 55 dB
to optimize S/N
– Couple: couples the input attenuator's level with your ref-
erence level setting
Access: Menu > Amp/Scale > Attenuation/Manual
Allows you to use the Scale/Div feature available for the total
harmonic distortion screen. It represents the value of one
division on the horizontal scale. The default setting is 10 dB
per division and the maximum value can be set up to 20 dB.
Set the value using the on-screen keyboard.
Access: Menu > Amp/Scale > Scale Division
Tap to change the scale unit of the display scale: dBm, dBV,
dBmV, dBµV, V, or W.
Access: Menu > Amp/Scale > Scale Unit
Allows you to turn the internal pre-amplifier on to correct and
compensate for the gain of the preamp so that amplitude
readings show the value at the input connector. It is the first
Preamp for the FR1 Band and operated when the input level
is -50 dBm or below.
Access: Menu > Amp/Scale > Preamp On/Off
Tap to turn the external offset mode on or off.
Access: Menu > Amp/Scale > External Offset On/Off
Tap to manually set the external offset value form -120 to 120
using the on-screen keyboard. When you compensate for
the external loss, input the negative values. when you com-
pensate for the external gain, input the positive values.
Access: Menu > Amp/Scale > External Offset
Tap to automatically set the reference and attenuation level.
Each time you tap this, both of the Y-Axis scale and input
attenuation level change to be optimized with some margin.
Access: Menu > Amp/Scale > Auto Scale
SPA06MA-O User's Guide
22145360, R005
April 2021
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